The STANDARD IGNITION PVS20 SI Ported Vacuum Switch is engineered to meet or exceed original equipment OE specifications ensuring a precise fit and reliable performance in your vehicle s engine system This switch plays a crucial role in regulating the flow of vacuum to the distributor s vacuum advance thereby maintaining optimal engine performance and reducing harmful emissions Constructed with advanced materials the PVS20 SI Ported Vacuum Switch is designed to withstand the harsh conditions of the engine environment including exposure to heat moisture and corrosive substances Its robust construction ensures longevity and consistent operation minimizing the risk of premature failure and the associated downtime By incorporating this ported vacuum switch into your vehicle s maintenance routine you can enhance engine efficiency promote cleaner emissions and contribute to the overall health of your engine The PVS20 SI Ported Vacuum Switch is a testament to Standard s commitment to quality and reliability offering a solution that addresses common engine performance issues related to vacuum regulation